> > But I still mix about a table spoon in 250ml of
> hot
> > water.
>
> That is nowhere near concentrated enough!
Oh no !
What IS the right proportion?
Do you use lab grade or commercial grade?
> > Also.. does the depth of the etchant matter ?
>
> Not really, I just like to have plenty of it.
How do you deal with excess etchant?
Have you ever tried anything else other than FeCl3?
KamalS
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